Your fear of MY guns is irrational. None have ever harmed a human or been used in a crime.

[Lizzie Poppet]

34. No, you shouldn't.

At least not to the point of genuine fear. For fear to be a rational response, there needs to be more than a tiny probability of actual harm occurring. The numbers relating to that point are unequivocal: out of the millions and millions of civilian gun owners in the US, only a tiny fraction will ever commit any criminal act with their weapons. Thus fear of all such armed persons not personally known to you is in fact irrational. That doesn't make such a fear a horrible thing or even contemptible (fear is an emotional response and not always particularly subject to reason), but is is irrational.

People "going postal" are simply not a frequent enough occurarnce that someone not in a situation with extenuating circumstances has any rational reason to be genuinely fearful of them. The same holds for CCW users and the possibility of tehm hitting bystanders. It's something that could happen...but it woudl seem that it almost never actually does. Being truly afraid of anything other than something which is 100% certain not to happen is simply not rational, not mentally healthy.

Now your example of having to escort the fired employee is another matter. There were additional circumstances that changed the equation considerably. Knowing that a person is both armed and in a position where they could be expected to be very angry creates a situation in which there is nothing irrational about fearing that things might become violent. The probability of violence is massively increased. Not, perhaps, even to a likelihood (obviously exact numbers wouldn't be available!), but by several orders of magnitude over some random armed stranger.